Question

Solve for f(-2).
f(x) = 2x - 4
f(-2) = [?]

Answer 1

f(-2) = -8

Explanation:

Givens

We are given a function:

`f(x)=2x-4`

We are told to find f(-2).

Solve

First, substitute -2 as x in f(x):

`f(x) = 2x-4\\\\f(-2) = 2x-4`

Then, substitute -2 as x in the equation itself:

`f(-2) = 2(-2) - 4`

Then, simplify by multiplying 2(-2):

`f(-2) = 2(-2) - 4\\\\f(-2) = -4 - 4`

Finally, simplify by performing the final arithmetic:

`f(-2) = -4 - 4\\\\f(-2) = -8`

Final Answer

Therefore, f(-2) = -8.